I think with build #1024 CEC issue has returned. If tv longer time out, CEC loses connection after power on. The connection is still about a second and then suddenly gone.
[3x RPi3]#[ AV Receiver - Marantz NR1506 ]#[ TV Panasonic TX-50EXW784 ]#[ NAS - OMV 4.1.xx (Arrakis) @ NanoPI M4 ]#[ Nextcloud 17.0.3 @ ODROID C2 ]